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EP0710948A3 - Apparatus and method for locating a plurality of roots of a line spectrum pair expression on unit circle - Google Patents

Apparatus and method for locating a plurality of roots of a line spectrum pair expression on unit circle Download PDF

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Publication number
EP0710948A3
EP0710948A3 EP95306470A EP95306470A EP0710948A3 EP 0710948 A3 EP0710948 A3 EP 0710948A3 EP 95306470 A EP95306470 A EP 95306470A EP 95306470 A EP95306470 A EP 95306470A EP 0710948 A3 EP0710948 A3 EP 0710948A3
Authority
EP
European Patent Office
Prior art keywords
interval
unit circle
expression
roots
locating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95306470A
Other languages
German (de)
French (fr)
Other versions
EP0710948A2 (en
EP0710948B1 (en
Inventor
Safdar M. Asghar
Mark A. Ireton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Advanced Micro Devices Inc
Original Assignee
Advanced Micro Devices Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Publication of EP0710948A2 publication Critical patent/EP0710948A2/en
Publication of EP0710948A3 publication Critical patent/EP0710948A3/en
Application granted granted Critical
Publication of EP0710948B1 publication Critical patent/EP0710948B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00—Speech synthesis; Text to speech systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] vocoders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Computational Mathematics (AREA)
  • Signal Processing (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Algebra (AREA)
  • General Engineering & Computer Science (AREA)
  • Operations Research (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Complex Calculations (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Image Analysis (AREA)

Abstract

An apparatus and method for locating a plurality of roots of a line spectrum pair expression on a unit circle. The method comprises the steps of: (1) receiving an initial value for locating a first site on the unit circle; (2) receiving a step value for defining an arc-distance on the unit circle; (3) generating intervals on the unit circle, each having a lower limit and an upper limit; the lower limit of the initial interval is the initial value and the upper limit of the initial interval is displaced on the unit circle from the initial value by the arc-distance; each succeeding interval has its lower limit coincident with the upper limit of the next preceding interval and has its upper limit displaced on the unit circle from its lower limit by the arc-distance; (4) evaluating the expression for at least the upper limit and the lower limit of each respective interval; (5) recognizing a root of the expression when the expression changes sign within an interval; (6) designating each such interval as a solution interval; and (7) generating the lower and upper limits of each solution interval to identify where the root is located. The apparatus comprises a waveform generator which receives the initial value and the step value and defines the arc-distance, and generates the intervals; a zero detector for recognizing roots of the expression when the expression changes sign.
EP95306470A 1994-10-05 1995-09-14 Apparatus and method for analyzing speech signals to determine parameters expressive of characteristics of the speech signals Expired - Lifetime EP0710948B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31837994A 1994-10-05 1994-10-05
US318379 2001-09-10

Publications (3)

Publication Number Publication Date
EP0710948A2 EP0710948A2 (en) 1996-05-08
EP0710948A3 true EP0710948A3 (en) 1997-12-29
EP0710948B1 EP0710948B1 (en) 2002-02-27

Family

ID=23237932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95306470A Expired - Lifetime EP0710948B1 (en) 1994-10-05 1995-09-14 Apparatus and method for analyzing speech signals to determine parameters expressive of characteristics of the speech signals

Country Status (5)

Country Link
US (1) US5745648A (en)
EP (1) EP0710948B1 (en)
KR (1) KR100354325B1 (en)
AT (1) ATE213864T1 (en)
DE (1) DE69525590D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3842432B2 (en) * 1998-04-20 2006-11-08 株式会社東芝 Vector quantization method
KR100429180B1 (en) * 1998-08-08 2004-06-16 엘지전자 주식회사 The Error Check Method using The Parameter Characteristic of Speech Packet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393272A (en) * 1979-10-03 1983-07-12 Nippon Telegraph And Telephone Public Corporation Sound synthesizer
US4975956A (en) * 1989-07-26 1990-12-04 Itt Corporation Low-bit-rate speech coder using LPC data reduction processing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1245363A (en) * 1985-03-20 1988-11-22 Tetsu Taguchi Pattern matching vocoder
US5012518A (en) * 1989-07-26 1991-04-30 Itt Corporation Low-bit-rate speech coder using LPC data reduction processing
ES2225321T3 (en) * 1991-06-11 2005-03-16 Qualcomm Incorporated APPARATUS AND PROCEDURE FOR THE MASK OF ERRORS IN DATA FRAMES.
US5305421A (en) * 1991-08-28 1994-04-19 Itt Corporation Low bit rate speech coding system and compression
US5448680A (en) * 1992-02-12 1995-09-05 The United States Of America As Represented By The Secretary Of The Navy Voice communication processing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393272A (en) * 1979-10-03 1983-07-12 Nippon Telegraph And Telephone Public Corporation Sound synthesizer
US4975956A (en) * 1989-07-26 1990-12-04 Itt Corporation Low-bit-rate speech coder using LPC data reduction processing

Also Published As

Publication number Publication date
EP0710948A2 (en) 1996-05-08
KR960015380A (en) 1996-05-22
US5745648A (en) 1998-04-28
DE69525590D1 (en) 2002-04-04
EP0710948B1 (en) 2002-02-27
ATE213864T1 (en) 2002-03-15
KR100354325B1 (en) 2003-01-15

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